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PDF AH284 Data sheet ( Hoja de datos )

Número de pieza AH284
Descripción Hall-Effect Smart Fan Motor Controller
Fabricantes ETC 
Logotipo ETC Logotipo



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Hall-Effect Smart Fan Motor Controller
AH284
„ Features
- On chip Hall sensor
- Rotor-locked shutdown
- Automatically restart
- Built-in Zener protection for output driver
- Operating voltage: 3.8V~20 V
- Output current: IO(AVE) = 500mA for SIP-4/SOT89-5
- Output current: IO(AVE) = 400mA for SOT23-5
- Package: SIP-4L, SOT23-5L, SOT89-5L
„ General Description
AH284 is a monolithic fan motor controller with Hall
sensor’s capability. It contains two complementary
open-drain drivers for motor’s coil driving, automatic
lock shutdown and restart function relatively.
To avoid coil burning, rotor-lock shutdown detection
circuit shut down the output driver if the rotor is
blocked and then the automatic recovery circuit will
try to restart the motor. This function repeats while
rotor is blocked. Until the blocking is removed, the
motor recovers running normally.
„ Pin Assignment
„ Pin Descriptions
284 Front View
1 : VCC
2 : DO
VCC 1
GND 2
3 : DOB
4 : GND
12 3 4
SIP-4L
5 NC
VCC
5
DOB
4
284 284
DO 3
74 DOB
SOT89-5L
123
NC GND DO
SOT23-5
Name
VCC
DO
DOB
GND
NC
Description
Input power
Output pin
Output pin
Ground
Not connected
„ Ordering Information
AH284 X - X X X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP-4L
W:SOT23-5L
Y: SOT89-5L
Lead
L : Lead Free
Blank: Normal
Packing
Blank : Tube or Bulk
A : Tape & Reel
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.5 Jan 17, 2005
1/9

1 page




AH284 pdf
Hall-Effect Smart Fan Motor Controller
AH284
„ Performance Characteristics (SOT23-5)
Ta (°C) 25 50 60 70 80 90 100 110 120 130 140 150
Pd (mW) 230 184 166 147 129 110 92 74 55 37 18 0
Pd (m W )
300
200
100
0
0
P ow er D issipation C urve
25 50 75 100 125 150
Ta (C)
„ Performance Characteristics (SOT89-5)
Ta (°C)
Pd (mW)
Ta (°C)
Pd (mW)
25 50 60 70 75 80 85 90 95 100
800 640 576 512 480 448 416 384 352 320
105 110 115 120 125 130 135 140 145 150
288 256 224 192 160 128 96 64 32
0
P d (m W )
900
800
700
600
500
400
300
200
100
0
0
P o w e r D is s ip a tio n C u rv e
25
50
75
100
125
150
T a (C )
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jan 17, 2005
5/9

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